Puzzling rise in ADEM diagnoses

VARICELLA-related encephalitis is declining in Australian children but hospitalisation for acute disseminated encephalomyelitis (ADEM) is rising, a study shows.

Researchers from the Children’s Hospital at Westmead, NSW, say their study is the first in Australia to show at a population level that hospitalisation for varicella encephalitis has declined significantly since chickenpox vaccine was introduced to the national immunisation program in 2006.

The researchers reviewed national encephalitis hospital admissions from 2000 to 2012, finding that ADEM was the most common specified cause,